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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Valacyclovir Clear all
Recruiting Phase 2 Interventional

Time-limited Triplet Combination of Pirtobrutinib, Venetoclax, and Obinutuzumab for Patients With Treatment-naïve Chronic Lymphocytic Leukemia (CLL) or Richter Transformation (RT)

NCT05536349
View directory record Official record
Conditions
Leukemia
Interventions
Pirtobrutinib, Obinutuzumab, Venetoclax, Valacyclovir, Allopurinol
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 4 Interventional Results available

Randomized Trial to Evaluate Suppressive Effect of High-Dose Valacyclovir Versus Once-Daily Valacyclovir on Persons With HSV-2

NCT01346475
View directory record Official record
Conditions
Genital Herpes
Interventions
Valacyclovir
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 8, 2017 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 1 Interventional

AdV-tk Therapy With Surgery and Chemoradiation for Pancreas Cancer (PaTK01)

NCT00638612
View directory record Official record
Conditions
Pancreatic Adenocarcinoma, Pancreatic Cancer
Interventions
AdV-tk, Valacyclovir
Biological · Drug
Lead sponsor
Candel Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
3
States / cities
Duarte, California • La Jolla, California • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 24, 2023 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Not applicable Interventional

A Study to Compare the Efficacy and Safety of Valacyclovir Hydrochloride ( 256U87 ) Versus Acyclovir in the Treatment of Recurrent Anogenital Herpes Infections in HIV Infected Patients

NCT00002000
View directory record Official record
Conditions
Herpes Simplex, HIV Infections
Interventions
Valacyclovir hydrochloride, Acyclovir
Drug
Lead sponsor
Glaxo Wellcome
Industry
Eligibility
13 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
22
States / cities
Mobile, Alabama • San Francisco, California • Denver, Colorado + 17 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 1 Interventional

A Safety And Tolerability Study Of Valaciclovir Oral Suspension In Infants And Children

NCT00297206
View directory record Official record
Conditions
Herpes Simplex
Interventions
Valaciclovir
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
1 Month to 6 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
10
States / cities
Birmingham, Alabama • Little Rock, Arkansas • San Diego, California + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 10, 2017 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Not applicable Interventional

Reduction of Postherpetic Neuralgia in Herpes Zoster

NCT01250561
View directory record Official record
Conditions
Herpes Zoster, Post-herpetic Neuralgia
Interventions
Gabapentin, Valacyclovir
Drug
Lead sponsor
Center for Clinical Studies, Texas
Other
Eligibility
50 Years and older
Enrollment
133 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2007
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 30, 2010 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioequivalency Study of Valacyclovir Hydrochloride 1000 mg Under Fed Conditions

NCT01132716
View directory record Official record
Conditions
Herpes Zoster, Shingles, Genital Herpes
Interventions
Valacyclovir Hydrochloride
Drug
Lead sponsor
Roxane Laboratories
Industry
Eligibility
18 Years to 45 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Jan 22, 2018 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 1 Interventional

Combined Cytotoxic and Immune-Stimulatory Therapy for Glioma

NCT01811992
View directory record Official record
Conditions
Malignant Glioma, Glioblastoma Multiforme
Interventions
Dose Escalation of Ad-hCMV-TK and Ad-hCMV-Flt3L
Biological
Lead sponsor
University of Michigan Rogel Cancer Center
Other
Eligibility
18 Years to 75 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 3, 2026, 2:34 AM EDT
Terminated Phase 2 Interventional Results available

Trial of Radiation and Gene Therapy Before Nivolumab for Metastatic Non-Small Cell Lung Carcinoma and Uveal Melanoma

NCT02831933
View directory record Official record
Conditions
Lung Squamous Cell Carcinoma Stage IV, Nonsquamous Nonsmall Cell Neoplasm of Lung, Metastatic Uveal Melanoma
Interventions
ADV/HSV-tk, Valacyclovir, SBRT, nivolumab
Biological · Drug · Radiation
Lead sponsor
Eric Bernicker, MD
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 20, 2023 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 3 Interventional

Precision Medicine Approach for Early Dementia & Mild Cognitive Impairment

NCT05894954
View directory record Official record
Conditions
Mild Cognitive Impairment, Dementia, Mild
Interventions
Precision Medicine Approach, Hormones and Medications tailored to lab tests, combined with devices that support stress management and brain exercises, Standard-of-Care, Lifestyle including diet, exercise, stress management
Dietary Supplement · Combination Product · Behavioral
Lead sponsor
Alzheimer's Prevention and Reversal Project, Inc.
Other
Eligibility
45 Years to 76 Years
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
6
States / cities
Folsom, California • San Rafael, California • Walnut Creek, California + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 3 Interventional Results available

Long Term Treatment of Herpes Simplex Encephalitis (HSE) With Valacyclovir

NCT00031486
View directory record Official record
Conditions
Encephalitis
Interventions
Valacyclovir, Placebo
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
12 Years and older
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2011
U.S. locations
13
States / cities
Birmingham, Alabama • Phoenix, Arizona • Sacramento, California + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2012 · Synced Sep 3, 2026, 2:34 AM EDT
Recruiting Phase 2 Interventional

A Biomarker Study in Men With Localized Prostate Cancer Treated With Aglatimagene Besadenovec

NCT07332000
View directory record Official record
Conditions
Prostate Cancer Patients Treated by Radiotherapy, Prostate Cancer (Adenocarcinoma)
Interventions
aglatimagene besadenovec + valacyclovir, External Beam Radiation Therapy (EBRT)
Biological · Radiation
Lead sponsor
Candel Therapeutics, Inc.
Industry
Eligibility
18 Years and older · Male only
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
7
States / cities
Peoria, Arizona • Lakewood, Colorado • Littleton, Colorado + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Sep 3, 2026, 2:34 AM EDT
Active, not recruiting Phase 3 Interventional

Phase 3 Study of ProstAtak® Immunotherapy With Standard Radiation Therapy for Localized Prostate Cancer

NCT01436968
View directory record Official record
Conditions
Prostate Cancer
Interventions
Aglatimagene besadenovec + valacyclovir, Placebo + valacyclovir
Biological
Lead sponsor
Candel Therapeutics, Inc.
Industry
Eligibility
18 Years and older · Male only
Enrollment
711 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2030
U.S. locations
72
States / cities
Gilbert, Arizona • Glendale, Arizona • Multiple Locations, Arizona + 56 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 1 Interventional

A Phase I Study of AdV-tk + Prodrug Therapy in Combination With Radiation Therapy for Pediatric Brain Tumors

NCT00634231
View directory record Official record
Conditions
Malignant Glioma, Recurrent Ependymoma
Interventions
AdV-tk, valacyclovir, Radiation
Biological · Drug · Radiation
Lead sponsor
Candel Therapeutics, Inc.
Industry
Eligibility
3 Years to 21 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2021
U.S. locations
2
States / cities
Chicago, Illinois • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 24, 2023 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 4 Interventional Results available

Trial to Study the Effect of Dose of Herpes Simplex Virus-2 (HSV-2) Suppressive Therapy on HSV and HIV

NCT00527618
View directory record Official record
Conditions
Genital Herpes, HIV Infection
Interventions
valacyclovir, acyclovir
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 6, 2018 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 1 Interventional

Intratumoral Gene Mediated Cytotoxic Immunotherapy in Patients With Resectable Non-Small Cell Lung Cancer

NCT03131037
View directory record Official record
Conditions
Lung Cancer
Interventions
CAN-2409 + valacyclovir
Biological
Lead sponsor
Candel Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 10, 2025 · Synced Sep 3, 2026, 2:34 AM EDT
Terminated Early Phase 1 Interventional

A Pilot Study of Induction Chemotherapy Followed by Surgery for Locally Advanced Resectable Head and Neck Cancer

NCT01111942
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
radiation combined with weekly carboplatin, conservation surgery
Other · Procedure
Lead sponsor
Southern Illinois University
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Springfield, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 4, 2015 · Synced Sep 3, 2026, 2:34 AM EDT
Completed No phase listed Observational

Effects of Long-Term Treatment With Valaciclovir (Valtrex) on Epstein-Barr Virus

NCT00005924
View directory record Official record
Conditions
Epstein Barr Virus Infection, Healthy
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 2 Interventional

A Pharmacokinetic Study of Valacyclovir in Pediatric Oncology Patients

NCT00042328
View directory record Official record
Conditions
Neoplasms
Interventions
Valacyclovir
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
2 Years to 18 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2005
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 23, 2015 · Synced Sep 3, 2026, 2:34 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

30-Day Trial of Oral Valtrex or Valtrex Plus Aspirin on Shedding of HSV DNA in Tears and Saliva of Volunteers

NCT00587496
View directory record Official record
Conditions
Herpes Simplex
Interventions
valacyclovir hydrochloride, placebo, valacyclovir plus aspirin
Drug
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
20 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
2
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 6, 2008 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 4 Interventional Results available

Zoster Eye Disease Study

NCT03134196
View directory record Official record
Conditions
Herpes Zoster Ophthalmicus
Interventions
Masked Placebo, Masked Oral Valacyclovir
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
527 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
71
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Little Rock, Arkansas + 58 more
Source: ClinicalTrials.gov public record
Updated Mar 6, 2025 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Valacyclovir 1000 mg Tablet Under Fasting Conditions

NCT01149499
View directory record Official record
Conditions
Healthy
Interventions
Valacyclovir
Drug
Lead sponsor
Teva Pharmaceuticals USA
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
1
States / cities
East Grand Forks, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 22, 2010 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Famciclovir 1-day Treatment Compared to 3-day Treatment With Valacyclovir in Adults With Recurrent Genital Herpes

NCT00306787
View directory record Official record
Conditions
Genital Herpes
Interventions
Famciclovir, Valacyclovir, Placebo matching famciclovir, Placebo matching valacyclovir
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
1,179 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
51
States / cities
Birmingham, Alabama • Chandler, Arizona • Phoenix, Arizona + 45 more
Source: ClinicalTrials.gov public record
Updated Jun 29, 2011 · Synced Sep 3, 2026, 2:34 AM EDT
Completed Phase 1 Interventional Results available

Neonatal Phase 1 Valacyclovir Study

NCT05468619
View directory record Official record
Conditions
Herpes Simplex
Interventions
Valacyclovir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
1 Day to 2 Days
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
12
States / cities
Birmingham, Alabama • Atlanta, Georgia • Louisville, Kentucky + 9 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Sep 3, 2026, 2:34 AM EDT